Hanford Reach

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Hanford Reach
Hanford Reach.jpg
A section of the Hanford Reach
CountryUnited States
Physical characteristics
SourceBase of Priest Rapids Dam
 ⁃ locationNear Desert Aire
 ⁃ coordinates46°38′35″N 119°54′39″W / 46.64306°N 119.91083°W / 46.64306; -119.91083
 ⁃ elevation443 ft (135 m)
MouthLake Wallula
 ⁃ location
 ⁃ coordinates
46°16′46″N 119°16′03″W / 46.27944°N 119.26750°W / 46.27944; -119.26750Coordinates: 46°16′46″N 119°16′03″W / 46.27944°N 119.26750°W / 46.27944; -119.26750
 ⁃ elevation
340 ft (100 m)
Length45 mi (72 km)
Basin size96,000 sq mi (250,000 km2)
 ⁃ locationbelow Priest Rapids Dam
 ⁃ average118,400 cu ft/s (3,350 m3/s)
 ⁃ minimum20,000 cu ft/s (570 m3/s)
 ⁃ maximum547,400 cu ft/s (15,500 m3/s)
Basin features
River systemthe Columbia River

The Hanford Reach is a free-flowing section of the Columbia River, around 51 miles (82 km) long, in eastern Washington state. It is named after a large northward bend in the river's otherwise southbound course.

Hanford Reach is the only section of the Columbia in the United States that is not tidal nor part of a reservoir, excluding a short reach between the Canada–United States border and the upper end of Franklin D. Roosevelt Lake, the reservoir of Grand Coulee Dam. Much of the Hanford Reach flows through the Hanford Site, a nuclear production facility established during World War II. It is also the site of the Hanford Reach National Monument, created from the original protection area around the Hanford Site. Upstream of the Hanford Reach is Priest Rapids Dam and downstream is the McNary Dam, which also impounds the last stretch of the Snake River, the largest tributary of the Columbia.

The Hanford Reach includes the still extant Coyote Rapids[1][2] and supports over forty species of fish including significant numbers of spawning fall chinook salmon[3][4]


  1. ^ "Earth-3D.com: Coyote Rapids - Washington, United States". earth-3d.com. Earth-3D.com. Retrieved 2016-07-23.
  2. ^ "Hanford Reach National Monument, Upper Columbia, 2008" (PDF). columbiakayakadventures.com. Retrieved 2016-07-23.
  3. ^ "U.S. Fish & Wildlife Service: Hanford Reach Wildlife & Habitat". fws.gov. U.S. Fish and Wildlife Service. Retrieved 2016-07-23.
  4. ^ Geranios, Nicholas K. (November 11, 2015), "Record number of salmon return to Hanford Reach", The Seattle Times

External links[edit]